Bell and buzzer alternator



Feb. 15, 1927.

V. E. LARSEN BELL: AND B'U Z ZER ALTERNATOR Filed Sept. 24, 1921 Patented Feb. 15, 1927.

. UNITED STATES VQLNEY n-LAnsEN; or onrcneo, ILLINOIS.

PATENT,

; BnLn-AND- UzzEn ALTnnNAToR;

Application filed September 24,1921 Serial No. 503,024.,

v invention hasreference more particularly to an attachmentfor a bell whereby a quiet signal may at will be substituted in placeofthe bell.

In apartmentsand houses it is customary .to have "a bell, whichv is electrically operated from. a button at the door, but asthese bells are made to ring sufliciently loud-so as to be readily heard throughout the entire house or apartment,' it-is frequently desir-- V able toeliminate the loud ringing of the bell so as not to disturb a sleeping or sick person, but at the same time have a less audible signal to give warning when anyone is .at the oor. g

Theprincipal objectsof my invention are to provide an attachment whereby'j'the loud. sounding of the door bellmay be eliminated at will and replaced by a less audible signal; to provide attachments whereby a buzzer may be combined with a door bell soth'at either may be optionally placed in the operating circuit; to permit the attachment to be applied without the necessity of making diflicult electrical connections; to' construct a the device as a unit, with'the parts already connected so that it is only necessaryto remove one of the wires from the bell and connect it with the attachment; to provide a structure of this character which is mounted in place by attaching same to the terminals of the bell; to provide convenient means which is operable at a distance for selectively placing the bell or buzzer in the circuit and in general, to provide an improved attachment of 7 simple form, inexpensive and easily attached for optionally substituting a buzzer in a circuit in place ofthebella c On the drawings- Fig. 1 is a'front'v ew of abell with invention applied thereto;

Fig. 2, a sectional view taken on the line 2-2 of Fig. 1;

Q Fig.3, a side view of the insulating connecto'r, which I use for attaching the buzzer tothebelhand" Fig. 4, a wiring diagram of-thejdevice.

Referring to the drawings the reference numeral 1 indicates a bell of the usual construction, which has the binding posts or terminals 2'a'nd 3 respectively to which wires 4 and 5 are connected for ringing the bell.

The reference numeral 6 indicates'a buzzerwhich in accordance with my invention is to be substituted at willin the. ringing circuit. in place of the bell and has terminals 7 and 8 with connectors9 and 10 respectively secured thereto forflsupporting "the buzzer from the terminals 2 and 3 of the bell. The

connector 9 is of. metal and is formed with a laterally. extending slot 11 atthe yupper "end, which is engaged on'thebinding post 2 and clamped in place'by vthe regular thumb nut 12, and theother connectorlO is of fiber orr-some other suitable insulatingmaterial and has a metal end piece 13 se-. cured thereon, which latter has a laterally opening slot 14 which engages the binding post 3 and is clamped thereon by the regular thumb nut 15. .The wire 4 is retained in place on the binding post 2 of the bell 7 when the connector 9 is appliedthereto, and

this latter being ofmetal, affords an elec- 't rical connectionv between the binding posts 2 and 7 whereas the'wire 5,;which was connected with the terminalB of the bell is re- 7 moved when the connector 10 is applied to this terminal and this wire 5"is connected to ,a binding post 16 carried by the connector 10 intermediate ofthe ends of the latter 1 and is preferably of the pendant type as shown. This switch may be constructed in any suitable form to accomplish the desired purpos'e,' as foreXample with ashell .19 having an opening 20 at the end through which I the triple wire cord 29 extends, and a trans verse'ly movable pin or key 21, having a yoke.

g 22 of spring metal secured intermediately to the stem 21 by the bolt 23.v A base 24' is fitted snugly in the lowerend' of the shell 19 and may be held in placeby frictional engagement with the shell or'by fastening devices such asscrews 25, if'desired, and this base has apair of opposed spring contacts 26 and 27 with seats 28 adapted t'o be engaged the roundedends of the arms of the yoke 22. With this construction, when the pin 21 is moved to one extremity of its movement as shown in Fig. 2, the end of one arm of yoke 22 engages the-contact 27 forcing the latter downwardly and seating in the I recess 28 thereof and at the same time, the

the arm of the yoke '22 when the latter en- I gages in the seat 28.

The wire 30 of the triple cord 29 has one end permanently connected by means of the bolt. 23 with the yoke 22 on the pin 21 and the other end connected to the binding post 16, and as the wire 5 of the bell circuitis connected with the terminal I6,'a connection is established between the wires and 30 to feed the current to the switch 19, where by it is communicated to the bell or buzzer depending upon the adjustment of the 21 of the switch 19. v

A Wire 31 of the triple cord 29 has one end connected with the contact 27, as shown in Fig. 2 and the other end permanently connectedwith the binding post 3 of a buzzer, as shown in Fig. 3 and the other wire 32 of the triple cord has one end connected with the contact 26 as, shown in Fig.2 and the other end connected with the metal piece 13 of the connector 10 as shown particularly in Fig. 3.

The'conne'ctors lt) and 10 are preferably fastened onto the terminals 7 and 8 'res'p'ec tively by means of nuts, which are operated by a wrench, so that thesev connectors are noteasily removable and 'the wires 30,31 and 32 are also secured to the respective parts 16, 8 and 13 so that they are not readily removed and the structure preferably furnished fully assembled withthe Qpendant switch 19 attached so that in applying the device to a bell, it is merely necessary to release the thumb nuts 12 and 15 and remove the one wire 5, after which the'slotted ends of the connectors 9 and 1-0 are inserted on the binding posts 2 and 3 and the thumb nuts 12 and 15 are then turned down against the ends of these connectors so as to hold the fconnec'tors securely in place and the wire 5 from, the termi-nal' 3 is then attached to the the buzzercut into the circuit iandwill be 7 operated when contact is made by the push said binding post l'ia ving a button 18 and when the switch yoke 22 is shifted in the reverse direction to engage the contact member 26 to Which the wire 32 is connected,- the buzzer is out out of the circuit and the bell cut into the circuit so as to be "operated. Thus, the hell or buzzer may be selectively operated by. adjusting the switch and this switch, being of a pendant type may be located at a point where it is conveniently accessible. J I

l/Vhile I have sliownand described my invention in a preferred form I am 'awa're'that various changes and modifications ma y be made without departing from the principle, of-my invention, the scope of which is to be determined by the appended claims.

I claim as my invention: v j

1. In a device of the class described the combination. ofa buzzer having a p ajir'of terminals. connecting means for detach'ably mounting "the buzzer on the terminals of an electric bell, said means comprising conductor on one of the terminals of the buzzer and an insulator on the other terminal of the buzzer, a two-way switch and branch circuit wires leading from the switch r'e S5 spec'tively to the last mentioned terminal of the buzzer and 'to a bell terminal connector 7 on the insulator.

2. In a device of the class described the combination of a buzzer having a pairof terminals, a conductor secured to one of the terminals and having in'eans for detachable connection with the binding post of a bell and an insulating member secured "on the other terminal of the buzzer and having a conductor adapted to 'be detachably "connected with the other binding 'post of the bell,

a pendant switch having'separate wires leading therefrom and connected respectivelywith the last mentioned terminal of the buzzer and the conductor on the insulator and a feed wire leading through an insulated connector on the insulator to. the switch and adapted to be selectively connected by thelatter with the branch wires.

3. An insulating connector c oii'iprising an elongated body portion formedo t' insulating material, a binding .post on "the body and located adjacent one end thereof, said body provided with an opening at the other end for receiving an electrical connection,

connector arranged thereon for detacl'iable engagement with an adjacent electrical connector, and anotherbindin'g post intermediate "the ends of the body.

a voLNnY Lassen; 

